// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.

package resource

import (
	"context"
	"decl/tests/mocks"
_ "encoding/json"
	"fmt"
	"github.com/docker/docker/api/types"
	"github.com/docker/docker/api/types/image"
	"github.com/stretchr/testify/assert"
	"io"
_ "net/http"
_ "net/http/httptest"
	"net/url"
	"os"
	"strings"
	"testing"
	"path/filepath"
	"decl/internal/data"
	"decl/internal/folio"
	"decl/internal/codec"
//_	"decl/internal/fan"
	"strconv"
)

type MockConfigValueGetter func(key string) (any, error)
func (m MockConfigValueGetter) GetValue(key string) (any, error) {
	return m(key)
}

func TestNewContainerImageResource(t *testing.T) {
	c := NewContainerImage(&mocks.MockContainerClient{})
	assert.NotNil(t, c)
}

func TestContainerImageURI(t *testing.T) {
	case0URI := URIFromContainerImageName("foo")
	assert.Equal(t, "container-image:///foo", case0URI)
	case1URI := URIFromContainerImageName("foo:bar")
	assert.Equal(t, "container-image:///foo:bar", case1URI)
	case2URI := URIFromContainerImageName("quuz/foo:bar")
	assert.Equal(t, "container-image:///quuz/foo:bar", case2URI)
	case3URI := URIFromContainerImageName("myhost/quuz/foo:bar")
	assert.Equal(t, "container-image://myhost/quuz/foo:bar", case3URI)
}

func TestLoadFromContainerImageURI(t *testing.T) {
	testURI := URIFromContainerImageName("myhost/quuz/foo:bar")
	newResource, resourceErr := folio.DocumentRegistry.ResourceTypes.New(testURI)
	assert.Nil(t, resourceErr)
	assert.NotNil(t, newResource)
	assert.IsType(t, &ContainerImage{}, newResource)
	assert.Equal(t, "myhost/quuz/foo:bar", newResource.(*ContainerImage).Name)
	assert.Equal(t, testURI, newResource.URI())
}

func TestContainerImageNameFromURI(t *testing.T) {
	case0u,_ := url.Parse("container-image:///foo")
	case0Image := ContainerImageNameFromURI(case0u)
	assert.Equal(t, "foo", case0Image)

	case1u,_ := url.Parse("container-image:///foo:bar")
	case1Image := ContainerImageNameFromURI(case1u)
	assert.Equal(t, "foo:bar", case1Image)

	case2u,_ := url.Parse("container-image:///quuz/foo:bar")
	case2Image := ContainerImageNameFromURI(case2u)
	assert.Equal(t, "quuz/foo:bar", case2Image)

	case3u,_ := url.Parse("container-image://myhost/quuz/foo:bar")
	case3Image := ContainerImageNameFromURI(case3u)
	assert.Equal(t, "myhost/quuz/foo:bar", case3Image)
}

func TestReadContainerImage(t *testing.T) {
	output := io.NopCloser(strings.NewReader("testdata"))
	ctx := context.Background()
	decl := `
  name: "alpine:latest"
  state: present
`
	m := &mocks.MockContainerClient{
		InjectImagePull: func(ctx context.Context, refStr string, options image.PullOptions) (io.ReadCloser, error) {
			return output, nil
		},
		InjectImageRemove: func(ctx context.Context, imageID string, options image.RemoveOptions) ([]image.DeleteResponse, error) {
			return nil, nil
		},
		InjectImageInspectWithRaw: func(ctx context.Context, imageID string) (types.ImageInspect, []byte, error) {
			return types.ImageInspect{
					ID:    "sha256:123456789abc",
				}, nil, nil
		},
	}

	c := NewContainerImage(m)
	assert.NotNil(t, c)

	e := c.LoadDecl(decl)
	assert.Equal(t, nil, e)
	assert.Equal(t, "alpine:latest", c.Name)

	resourceYaml, readContainerErr := c.Read(ctx)
	assert.Equal(t, nil, readContainerErr)
	assert.Greater(t, len(resourceYaml), 0)
}

func TestCreateContainerImage(t *testing.T) {
	m := &mocks.MockContainerClient{
		InjectImageBuild: func(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
			return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader("image built")) }, nil
		},
	}

	decl := fmt.Sprintf(`
  name: "testcontainerimage"
  image: "alpine"
  contextref: file://%s
`, "")
	c := NewContainerImage(m)
	stater := c.StateMachine()

	e := c.LoadDecl(decl)
	assert.Nil(t, e)
	assert.Equal(t, "testcontainerimage", c.Name)

	assert.Nil(t, stater.Trigger("create"))
}

func TestCreateContainerImagePush(t *testing.T) {
	m := &mocks.MockContainerClient{
		InjectImageBuild: func(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
			return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader("image built")) }, nil
		},
		InjectImagePush: func(ctx context.Context, image string, options image.PushOptions) (io.ReadCloser, error) {
			return io.NopCloser(strings.NewReader("foo")), nil
		},
	}

	decl := fmt.Sprintf(`
  name: "testcontainerimage"
  image: "alpine"
  push: true
  contextref: file://%s
`, "")
	c := NewContainerImage(m)
	stater := c.StateMachine()

	e := c.LoadDecl(decl)
	assert.Nil(t, e)
	assert.Equal(t, "testcontainerimage", c.Name)

	c.UseConfig(MockConfigValueGetter(func(key string) (any, error) {
		switch key {
		case "repo_password":
			return "bar", nil
		case "repo_username":
			return "foo", nil
		case "repo_server":
			return "", nil
		}
		
		return nil, fmt.Errorf("%w: %s", data.ErrUnknownConfigurationKey, key)
	}))

	assert.Nil(t, stater.Trigger("create"))

	assert.Nil(t, c.Push(context.Background()))
	assert.True(t, c.PushImage)
//	assert.Equal(t, "foo", c.Output)
}

func TestContainerImageContextDocument(t *testing.T) {
	contextDir, _ := filepath.Abs(TempDir.FilePath("context"))
	etcDir, _ := filepath.Abs(filepath.Join(contextDir, "etc"))
	binDir, _ := filepath.Abs(filepath.Join(contextDir, "bin"))

	assert.Nil(t, os.Mkdir(contextDir, os.ModePerm))
	assert.Nil(t, os.Mkdir(etcDir, os.ModePerm))
	assert.Nil(t, os.Mkdir(binDir, os.ModePerm))

	m := &mocks.MockContainerClient{
		InjectImageBuild: func(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
			return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader("image built")) }, nil
		},
	}

	contextDirUri := fmt.Sprintf("file://%s", contextDir)
	
	contextDirDecl := fmt.Sprintf(`
type: file
attributes:
  path: %s
`, contextDir)

	decl := fmt.Sprintf(`
  name: "testcontainerimage"
  image: "alpine"
  contextref: %s
`, contextDirUri)

	c := NewContainerImage(m)
	c.ConverterTypes = TestConverterTypes
	//stater := c.StateMachine()
	e := c.LoadDecl(decl)
	assert.Nil(t, e)

	c.ContextRef = folio.ResourceReference(contextDirUri)
	contextFile := folio.NewDeclaration()
	assert.Nil(t, contextFile.NewResource(&contextDirUri))
	assert.Nil(t, contextFile.LoadString(contextDirDecl, codec.FormatYaml))
	_, readErr := contextFile.Resource().Read(context.Background())
	assert.Nil(t, readErr)

	c.Resources = data.NewResourceMapper()
	c.Resources.Set(contextDirUri, contextFile)

	d, contextErr := c.ContextDocument()
	assert.Nil(t, contextErr)
	assert.NotNil(t, d)
	assert.Greater(t, 3, d.Len())

}

func TestContainerError(t *testing.T) {
	var expected, err, boErr  ContainerError
	expected.Detail.ErrorMessage = "invalid reference format"
	expected.Error = "invalid reference format"
	buildOutput := `"{\"stream\":\"Step 1/6 : ARG DIST\"}\r\n{\"stream\":\"\\n\"}\r\n{\"stream\":\"Step 2/6 : FROM golang:${DIST}\"}\r\n{\"stream\":\"\\n\"}\r\n{\"errorDetail\":{\"message\":\"invalid reference format\"},\"error\":\"invalid reference format\"}\r\n"`
	unqBuildOutput, buildOutputErr := strconv.Unquote(buildOutput)
	assert.Nil(t, buildOutputErr)

	dec := codec.NewJSONStringDecoder(strings.Split(unqBuildOutput, "\r\n")[4])
	assert.Nil(t, dec.Decode(&boErr))
	assert.Equal(t, expected, boErr)

	msg := `"{\"errorDetail\":{\"message\":\"invalid reference format\"},\"error\":\"invalid reference format\"}"`
	unquotedmsg := `{"errorDetail":{"message":"invalid reference format"},"error":"invalid reference format"}`
	c,_ := strconv.Unquote(msg)
	assert.Equal(t, unquotedmsg, c)
	decoder := codec.NewJSONStringDecoder(c)
	assert.Nil(t, decoder.Decode(&err))
	assert.Equal(t, expected, err)
}

func TestContainerLogUnmarshal(t *testing.T) {
/*
	m := &mocks.MockContainerClient{
		InjectImageBuild: func(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
			return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader("image built")) }, nil
		},
	}

	c := NewContainerImage(m)
	assert.NotNil(t, c)
*/

	buildOutput := `"{\"stream\":\"Step 1/6 : ARG DIST\"}\r\n{\"stream\":\"\\n\"}\r\n{\"stream\":\"Step 2/6 : FROM golang:${DIST}\"}\r\n{\"stream\":\"\\n\"}\r\n{\"errorDetail\":{\"message\":\"invalid reference format\"},\"error\":\"invalid reference format\"}\r\n"`
	unqBuildOutput, buildOutputErr := strconv.Unquote(buildOutput)
	assert.Nil(t, buildOutputErr)

	for _, v := range strings.Split(unqBuildOutput, "\r\n") {
		var clog ContainerLog

		outputDecoder := codec.NewJSONStringDecoder(v)
		err := outputDecoder.Decode(&clog)
		if err == io.EOF {
			break
		}

		if clog.ContainerLogStream != nil {
			assert.Greater(t, len(clog.ContainerLogStream.Stream), 0)
		}
	}

	//assert.Equal(t, "Step 1/6 : ARG DIST", clog[0].ContainerLogStream.Stream)
}

func TestContainerImageRegistryAuthConfig(t *testing.T) {

	m := &mocks.MockContainerClient{
		InjectImageBuild: func(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
			return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader("image built")) }, nil
		},
	}

	c := NewContainerImage(m)
	assert.NotNil(t, c)

	c.UseConfig(MockConfigValueGetter(func(key string) (any, error) {
		switch key {
		case "repo_password":
			return "bar", nil
		case "repo_username":
			return "foo", nil
		case "repo_server":
			return "", nil
		}
		
		return nil, fmt.Errorf("%w: %s", data.ErrUnknownConfigurationKey, key)
	}))

	authConfig, err := c.RegistryAuthConfig()

	assert.NotNil(t, authConfig)
	assert.Nil(t, err)
	assert.Equal(t, "bar", authConfig.Password)
	assert.Equal(t, "foo", authConfig.Username)
}

func TestContainerImageRegistryAuth(t *testing.T) {

	m := &mocks.MockContainerClient{
		InjectImageBuild: func(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
			return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader("image built")) }, nil
		},
	}

	c := NewContainerImage(m)
	assert.NotNil(t, c)

	c.UseConfig(MockConfigValueGetter(func(key string) (any, error) {
		switch key {
		case "repo_password":
			return "bar", nil
		case "repo_username":
			return "foo", nil
		case "repo_server":
			return "", nil
		}
		
		return nil, fmt.Errorf("%w: %s", data.ErrUnknownConfigurationKey, key)
	}))

	auth, err := c.RegistryAuth()

	assert.NotNil(t, auth)
	assert.Nil(t, err)
	assert.Greater(t, len(auth), 1)

	
}